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	Provedor de dados Agrociencia (2) Horticultura Brasileira (1) Planta Daninha (1) Autor Espinosa-García,Francisco (2) Molina-Freaner,Francisco (2) Sarukhán-Kermez,José (2) Christoffoleti,P.J. (1) Medeiros,Maria A (1) Monquero,P.A. (1) Morais,Helena C (1) Sujii,Edison R (1) Mais... Palavra-chave Galinsoga parviflora (4) Acalypha indica (2) Lopezia racemosa (2) Seed bank (2) Traditional farming systems (2) Weed demography (2) Amaranthus hybridus (1) Commelina benghalensis (1) Conservation biological control (1) Coriandrum sativum (1) Habitat manipulation (1) Ipomoea grandifolia (1) Lycopersicon esculentum (1) Richardia brasiliensis (1) Tolerância (1) Tuta absoluta (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2009 (1) 2008 (2) 2003 (1) País Brazil (2) Mexico (2) Idioma Inglês (3) Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Dinâmica do banco de sementes em áreas com aplicação freqüente do herbicida glyphosate Planta Daninha Monquero,P.A.; Christoffoleti,P.J.. Embora o herbicida glyphosate seja considerado não-seletivo, várias espécies de plantas daninhas apresentam certo grau de tolerância às doses recomendadas. No Brasil, já existem relatos de seleção de espécies de plantas daninhas tolerantes ao glyphosate em áreas com o uso intensivo deste herbicida. Assim, o objetivo desta pesquisa foi avaliar a influência da aplicação repetitiva do herbicida glyphosate sobre a dinâmica do banco de sementes das plantas daninhas tolerantes: Commelina benghalensis, Ipomoea grandifolia e Richardia brasiliensis; e das plantas daninhas suscetíveis: Amaranthus hybridus e Galinsoga parviflora. O experimento foi monitorado durante dois anos em áreas experimentais do Departamento de Produção Vegetal da Escola Superior de Agricultura... Tipo: Info:eu-repo/semantics/article Palavras-chave: Tolerância; Richardia brasiliensis; Commelina benghalensis; Ipomoea grandifolia; Galinsoga parviflora; Amaranthus hybridus. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582003000100008 Effect of plant diversification on abundance of South American tomato pinworm and predators in two cropping systems Horticultura Brasileira Medeiros,Maria A; Sujii,Edison R; Morais,Helena C. Several studies have demonstrated that the diversification of the agroecosystem may reduce insect pest infestation using the strategy of companion planting. We studied the effect of the presence of coriander and Gallant soldier as companion plants in the tomato crop under organic and conventional management on abundance of the tomato pests and predators. The experiment was carried out under field conditions, at Distrito Federal, Brazil, from July to October, 2004. The experimental design was of randomized blocks with three replicates in a 3 x 2 factorial arrangement [Three crop diversification levels: tomato in monoculture, tomato intercropped with coriander, and tomato intercropped with coriander and Gallant soldier; and two cropping systems: organic and... Tipo: Info:eu-repo/semantics/article Palavras-chave: Lycopersicon esculentum; Coriandrum sativum; Galinsoga parviflora; Tuta absoluta; Habitat manipulation; Conservation biological control. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362009000300007 Weed population dynamics in a rain-fed maize field from the Valley of México Agrociencia Molina-Freaner,Francisco; Espinosa-García,Francisco; Sarukhán-Kermez,José. Maize has a highly diverse weed flora in Mesoamerica, with a high proportion of native weed species. The long agricultural history of maize in Mesoamerica has imposed selection regimes that adapted native weeds to maize farming systems. These native weeds are expected to exhibit stable or increasing populations under traditional maize culture where herbicides are not used. In this paper, we study the population dynamics of major weeds occurring in a rain-fed maize field in the Valley of México. Eighteen species were recorded in the seed bank that showed a seasonal variation from 24 169 to 135 770 viable seeds m-2 . The four most abundant species represented 93% of the total seed bank and exhibited contrasting patterns of emergence that represented 2.2 to... Tipo: Info:eu-repo/semantics/article Palavras-chave: Acalypha indica; Galinsoga parviflora; Lopezia racemosa; Seed bank; Traditional farming systems; Weed demography. Ano: 2008 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952008000500002 Weed population dynamics in a rain-fed maize field from the Valley of Mexico Agrociencia Molina-Freaner,Francisco; Espinosa-García,Francisco; Sarukhán-Kermez,José. Maize has a highly diverse weed flora in Mesoamerica, with a high proportion of native weed species. The long agricultural history of maize in Mesoamerica has imposed selection regimes that adapted native weeds to maize farming systems. These native weeds are expected to exhibit stable or increasing populations under traditional maize culture where herbicides are not used. In this paper, we study the population dynamics of major weeds occurring in a rain-fed maize field in the Valley of México. Eighteen species were recorded in the seed bank that showed a seasonal variation from 24 169 to 135 770 viable seeds m-2. The four most abundant species represented 93% of the total seed bank and exhibited contrasting patterns of emergence that represented 2.2 to... Tipo: Info:eu-repo/semantics/article Palavras-chave: Acalypha indica; Galinsoga parviflora; Lopezia racemosa; Seed bank; Traditional farming systems; Weed demography. Ano: 2008 URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952008000600006 Registros recuperados: 4 Primeira ... 1 ... Última

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